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68577572 = 2272449199
BaseRepresentation
bin1000001011001…
…10100100100100
311210001002202002
410011212210210
5120023440242
610445504432
71461620420
oct405464444
9153032662
1068577572
113578a388
121ab72118
131129125b
149171b80
156049432
hex4166924

68577572 has 12 divisors (see below), whose sum is σ = 137155200. Its totient is φ = 29390376.

The previous prime is 68577571. The next prime is 68577577. The reversal of 68577572 is 27577586.

It is a happy number.

68577572 is an admirable number.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (68577571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1224572 + ... + 1224627.

It is an arithmetic number, because the mean of its divisors is an integer number (11429600).

Almost surely, 268577572 is an apocalyptic number.

It is an amenable number.

68577572 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68577572 is a wasteful number, since it uses less digits than its factorization.

68577572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2449210 (or 2449208 counting only the distinct ones).

The product of its digits is 823200, while the sum is 47.

The square root of 68577572 is about 8281.1576485417. The cubic root of 68577572 is about 409.3178663308.

The spelling of 68577572 in words is "sixty-eight million, five hundred seventy-seven thousand, five hundred seventy-two".

Divisors: 1 2 4 7 14 28 2449199 4898398 9796796 17144393 34288786 68577572